A seated portrait of Jesse Ramsden (1735–1800), the royal optician to King George III and an instrument maker. In the background is Ramsden's altitude and ozimuth circle. He holds a scale in his left hand and a compass in his right hand.
Listen to the latest episodes of CHF’s award-winning podcast.
Help us preserve and share the history of chemistry and related sciences. Make a tax-deductible donation online.
©2010–2015 Chemical Heritage Foundation